lotus/tvx/drivers/randomness.go

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generate test-vectors based on tests from chain-validation project (#181) * Read a subset of filecoin state over the full node API * wip * import export wip * extract actors from message * generate car for any state * library for providing a pruned statetree * test vector schema draft + example 'message' class test vector. * message => messages test vector class. * fixup * wip * use lb.NewBlockstore with ID * fixup lotus-soup, and generate * fix deals * magic params * work on schema / export of test vector * fixup * wip deserialise state tree * pass at building a test case from a message * progress loading / serializing * recreation of ipld nodes * generation of vector creates json * kick off tvx tool. * wip * wip * retain init actor state. * initial test with printed out state * remove testing.T, but keep require and assert libraries * wip refactor state tree plucking. * simplified * removed factories * remove builder.Build ; remove interface - use concrete iface * comment out validateState * remove Validator * remove TestDriverBuilder * remove client * remove box * remove gen * remove factories * remove KeyManager interfafce * moved stuff around * remove ValidationConfig * extract randomness * extract config and key_manager * extract statewrapper * extract applier * rename factories to various * flatten chain-validation package * initial marshal of test vector * do not require schema package * fixup * run all messages tests * better names * run all messages tests * remove Indent setting from JSON encoder for now * refactor, and actually running successfully ;-) * remove irrelevant files; rename extract-msg command. * remove root CID from state_tree object in schema. * add tvx/lotus package; adjust .gitignore. * tidy up command flag management. * add comment. * remove validateState and trackState * remove xerrors * remove NewVM * remove commented out RootCID sets * enable more tests * add all `message_application` tests * delete all.json * update Message struct * fix message serialization * support multiple messages * gofmt * remove custom Message and SignedMessage types * update tests with gzip and adhere to new schema for compressed CAR * improved iface for Marshal * update Validation * remove test-suites and utils * better names for chain. methods * go mod tidy * remove top-level dummyT Co-authored-by: Will Scott <will@cypherpunk.email> Co-authored-by: Raúl Kripalani <raul@protocol.ai>
2020-08-05 17:40:09 +00:00
package drivers
import (
"context"
abi_spec "github.com/filecoin-project/specs-actors/actors/abi"
acrypto "github.com/filecoin-project/specs-actors/actors/crypto"
"github.com/filecoin-project/specs-actors/actors/abi"
)
// RandomnessSource provides randomness to actors.
type RandomnessSource interface {
Randomness(ctx context.Context, tag acrypto.DomainSeparationTag, epoch abi.ChainEpoch, entropy []byte) (abi.Randomness, error)
}
// Specifies a domain for randomness generation.
type RandomnessType int
type randWrapper struct {
rnd RandomnessSource
}
func (w *randWrapper) GetRandomness(ctx context.Context, pers acrypto.DomainSeparationTag, round abi.ChainEpoch, entropy []byte) ([]byte, error) {
return w.rnd.Randomness(ctx, pers, round, entropy)
}
type vmRand struct {
}
func (*vmRand) GetRandomness(ctx context.Context, dst acrypto.DomainSeparationTag, h abi.ChainEpoch, input []byte) ([]byte, error) {
panic("implement me")
}
type fakeRandSrc struct {
}
func (r fakeRandSrc) Randomness(_ context.Context, _ acrypto.DomainSeparationTag, _ abi_spec.ChainEpoch, _ []byte) (abi_spec.Randomness, error) {
return abi_spec.Randomness("sausages"), nil
}
func NewRandomnessSource() RandomnessSource {
return &fakeRandSrc{}
}